Essendon wrote: »
@DevilWAH, quick question for ya, are all hosts contributing to the VSAN cluster? Apparently performance's poor if not all ESXi hosts in the cluster participate in the VSAN cluster. Also, from your other thread, have you had a chance to find out the PSP you've got going in ESXi? If it's fixed, changing to Round Robin might just do it because it seems like all IOs that are being sent down one link are smashing it resulting in poor performance.
Another question - is the 10GbE dedicated to VSAN and have you looked at what VSAN observer says about the situation?
And read this please > VMware vSphere Virtual SAN design considerations... and this for some performance related info >Root cause analysis of my VSAN outage : vmware
DevilWAH wrote: »
He was not asked to configure VSS, I did that months ago and its been working fine. he was asked to check out the network to see if it was the cause of poor performance on a storage issue. I would expect any one be they a CCENT or a CCIE that if they are looking at a network and they come across some thing they have no experienced before to check it out before they suggest making fundamental changes to the config/setup.
You are saying that if you came (paid) to troubleshoot an issue running across my core, and you sat down logged on and found that you were seeing both chassis presenting as a single logical switch and where told it was running as a VSS pair, you would not either take some time to read a whitepaper / documentation on the technology or at least ask me (the person who does know how to configure it) for the basics before claiming to have a solution.
I was asked to look at some MPLS the other day, my response was "I haven't worked with MPLS, let me take this away and have a play and I will get back to you". I don't mind someone not knowing, I don't like someone throwing ideas at a problem without knowing.
Essendon wrote: »
What kind of SCSI controller's in use? Gotta think about controller queues too, some entry level ones have a queue depth of like 20-something. Kinda okay for light traffic, can bottom out when loaded.
lrb wrote: »
He could always be a CCIE in Security, DC, SP, Wireless, etc. Just because he is a CCIE in one area doesn't mean he has to know the whole Cisco portfolio or range of technologies.